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USING S-PARAMETER MEASUREMENTS TO MANAGE SAR AND TRANSMIT GAIN

  • US 20100244840A1
  • Filed: 03/31/2009
  • Published: 09/30/2010
  • Est. Priority Date: 03/31/2009
  • Status: Active Grant
First Claim
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1. A magnetic resonance imaging system comprising:

  • a radio frequency coil having a plurality of conductive coil elements;

    control circuitry configured to determine, based at least in part on a measurement of scattering parameters, a plurality of forward voltages that is predicted to cause a deposition of power into an object within the radio frequency coil when applied respectively to the plurality of coil elements, wherein the deposition of power is within a predetermined specific absorption rate; and

    a radio frequency coil amplifier configured to apply the determined plurality of forward voltages respectively to the plurality of coil elements.

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